Features: Mastering guitar theory effortlessly with the Circles of Fifths wheel design, visually mapping chord progressions and scale relationships through intuitive rotation perfect for decoding complex music concepts. Crafted from aluminum alloy, this chord wheel outlasts plastic alternatives while maintaining smooth rotation for frequent practice and professional use. Ideal for novice guitarists seeking foundational knowledge, intermediate players expanding their skillset, and music educators requiring stable teaching aid for interactive lessons. Compact enough for backpack storage, this portable music tool enhances learning during home practice, classroom instruction, or impromptus at outdoor venues. Unlock comprehensive music theory understanding with integrated features covering chord structures, key signatures, and modals patterns a complete rotational reference systems for guitarists at any levels. Specifications: Component: Aluminum Alloy Diameter: Approx. 4.33inch(11cm) Bracket Size: Approx. 2.75x5.23inch(7x13.3cm) Package Includes: 1x Guitar Fifths Wheel note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.